Fits: 1986-'16 HD® big twins. Kit contains 2 front and 2 rear rocker arms. Extremely durable rollers reduce valve stem side thrusting with high lift cams. Superior wear and fatigue resistance even in the most demanding applications. 3⁄4" long bushings provide 50% more bushing support area than 1⁄2" long bushings. Available in stock 1.625:1 ratio or performance 1.725:1 ratio.